It takes place on a planet called Copper-9 which is snowy and dark all the time. The Worker Drones just live their lives and the Disassembly Drones kill the Workers for their oil (Oil basically being robot blood) that they consume to avoid overheating and dying. V and J are the murderous ones. N only kills because he feels like he needs to. There is a difference in appearance between workers and Disassembly Drones, the workers are shorter and they both have different body shapes.